Crisis energética: El futuro de los combustibles fósiles (Energy Crisis: The Future of Fossil Fuels)

Algorithms might sound like a complicated tech term, but don't be intimidated, people actually use them every day. Using accessible language and full-color photographs, this book simplifies algorithms in an easy-to-understand way. Readers will be amazed to learn that an algorithm is just a set of steps for computers to follow to get things done. STEM topics from the Next Generation Science Standards are emphasized throughout the text. Sidebars featuring key terms help readers grow their tech vocabulary, and fact boxes provide additional opportunities to learn.

What's hidden in the woods? Look closely through three colored transparent sheets to discover hidden secrets. Start with green and nothing moves. As if by magic each sheet shows animals and plants coming to life. Watch nature's surprises emerge in front of your eyes.

Describes the raid on an armory in Harpers Ferry, West Virginia by John Brown, an abolistionist, in 1859. In graphic novel format.

Examines different kinds of relationships, discussing why they work and what to do when they do not work.

This series will capture the attention of ELL students with its irresistible, full-color photographs of young animals in their natural habitats. The Spanish text uses authentic language to describe animal characteristics and life cycles. Each chapter includes a question-and-answer feature about the animal's behavior and physical traits, while a two-page "animal profile" at the end of each book provides quick facts about the animal's size, senses, habitat, and animal relatives.